first time wordpress ,and first error help please

hello guys , iam new for wordpress and its my first time to build a website , so i bought my domain from godady and hosting hostGator so i installed wordpress through Cpanel , but since lastnight my website my wordpress dashboard still not up , iam waiting for now almost 15 hours ….
can one can helpme please

First, it can take anything from 24 – 72 hours for DNS changes to fully propagate. Second, different networks will update at different times during this period. That is, bear in mind that just because one provider has updated their records, it doesn’t mean that another will.

thanks it works me bofore 20 minute , so i changed some settings now for the url by default WordPress comes like this “http://yourname.com”
and i changed into “http://www.yournamame.com”
but the connection is out and i cannot go back my old or the new one